In this case specifically, David Crystal is arguing against folks who bemoan the effect of text messages on English. An example of what they might complain about: "I H8 U jk LOL. B @ my plc @ 9". Haters think that this will destroy the English language and civilization as we know it, while Crystal points out that these sorts of conventions are not new, children do not try to use this sort of language on school papers for the most part, and texting seems to aid in literacy.
Well, he might not want to point to such a text message in his defense, because it would work against his claim that less than 10% of the words are abbreviated!
Seriously, only 10%?
Linguist Arnold Zwicky has named three linguistic 'illusions' which seem relevant to cognitive bias. They are:
Zwicky talks about them here, and in not so many words links them to the standard bias of selective perception.
As an example, here is an exerpt via Jerz's Literacy Weblog (originally via David Crystal), regarding text messages:
It is my conjecture that these illusions are notable in areas other than linguistics. For example, history is rife with allusions that the younger generation is corrupt, and such speakers are not merely referring to their use of language. Could this be the adolescent illusion in action?
So, are these notable biases to watch out for, or are they merely obvious instances of standard biases?